Thermal conductivity against densityHigher and further left: spreads more heat for its weightThermal expansion against thermal conductivityLower and further right: warps less when heated
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Covestro Makrolon 2405 general-purpose PC (MVR 19), Covestro technical datasheet version 2026-09-28, typical values
SLA Resin Tough 2000
Formlabs Tough 2000 Resin V2 (FLTO2002), TDS Rev. 01 10/06/2025; printed on Form 4 at 100 µm, washed in Form Wash V2 10+5 min in >=99% IPA, post-cured 70 °C for 12 min in Form Cure V2. Orientation not stated.
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Makrolon 2405 Technical Data SheetCovestroPlastic Polycarbonate · Yield strength: typical, tensile yieldPlastic Polycarbonate · Ultimate tensile strength: typical, stress at breakPlastic Polycarbonate · Flexural strength: typical, flexural strengthPlastic Polycarbonate · Elongation at break: typical, strain at breakPlastic Polycarbonate · Young's modulus (stiffness): typicalPlastic Polycarbonate · Density: typicalPlastic Polycarbonate · Thermal conductivity: typical, through-plane, 23 CPlastic Polycarbonate · Thermal expansion: typical, 23-55 C, parallel and normalPlastic Polycarbonate · Glass transition: typical, DSC 10 C/minPlastic Polycarbonate · Max service temperature: UL 746B RTI, tensile strength, 1.5 mm
Engineering Polymers Part and Mold Design: Thermoplastics, A Design GuideCovestroarchived copyPlastic Polycarbonate · Poisson's ratio: typical, polycarbonate family (Covestro Part and Mold Design guide, Table 3-1)
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Makrolon 2405 Data Sheet, ASTM valuesBayer MaterialSciencearchived copyPlastic Polycarbonate · Specific heat: typical (guide value), Bayer ASTM datasheet for Makrolon 2405, ASTM D 2766
Each number points to the document that states it, with the exact basis. Values without a number are computed from the sourced ones. "Not sourced" means no citable source states it (or only a specification minimum); figures computed from it are left out too.
SLA Resin Tough 2000 is 3D printed: its properties depend on build direction and print settings; these are typical values.
Questions
Mechanical
Is Plastic Polycarbonate stronger than SLA Resin Tough 2000?
Plastic Polycarbonate is stronger: its yield strength is 65 MPa against 40.4 MPa for SLA Resin Tough 2000 (1.61x).
Which is lighter, Plastic Polycarbonate or SLA Resin Tough 2000?
SLA Resin Tough 2000 is lighter: 1,090 kg/m³ against 1,200 kg/m³ for Plastic Polycarbonate.
Which is stiffer, Plastic Polycarbonate or SLA Resin Tough 2000?
Plastic Polycarbonate is stiffer: Young's modulus 2.4 GPa against 1.8 GPa for SLA Resin Tough 2000, so the same part in Plastic Polycarbonate deflects less under the same load.
Which is lighter for the same job, Plastic Polycarbonate or SLA Resin Tough 2000?
For the same stiffness or strength: Plastic Polycarbonate is lighter for a stiff rod or tie (tension), stiff beam (bending), strong rod or tie, strong beam, strong panel or plate.
Part that must be
Plastic Polycarbonate
SLA Resin Tough 2000
Stiff rod or tie (tension)
lighter
21% heavier
Stiff beam (bending)
lighter
5% heavier
Stiff panel or plate
about equal
about equal
Strong rod or tie
lighter
46% heavier
Strong beam
lighter
25% heavier
Strong panel or plate
lighter
15% heavier
For the same stiffness or strength, mass scales with density over stiffness (or strength) raised to a power set by how the part is loaded: 1 for a rod in tension, 1/2 for a beam in bending, 1/3 for a panel (the standard material-selection indices).
Which is more ductile, Plastic Polycarbonate or SLA Resin Tough 2000?
Plastic Polycarbonate stretches further before it breaks: 125% elongation at break against 79% for SLA Resin Tough 2000.
Thermal
Which expands less with temperature?
Plastic Polycarbonate expands less: 65 µm/m·K against 134 µm/m·K for SLA Resin Tough 2000.